km@emory.uucp (Ken Mandelberg) (08/09/88)
We are running SunOS 4.0 on a Sun 4/280. We are having a serious
problem with our ALM2. After a few hours from boot the ALM2 goes into
what I call "history" mode. That means that when a new character is
received by the ALM2 it sends an old character to the CPU (maybe with a
20 character lag). Each keystroke forces out one of the old waiting
characters. From time to time it is also possible for the whole
machine to hang until a new character is sent to the ALM2.
Sun has some ALM2 patches for SunOS 4.0, but none of them fix our
problem, nor does our problem seem to match the abstracts of the known
problems.
My interpretation of the symptoms is that some of the ALM2 interrupts
are being lost.
The device worked properly under SunOS 3.2, so we don't think its
hardware. Since we went to SunOS 4.0, we also have added a Ciprico 3200
disk controller with NEC drives, to supplement an existing Xylogics 451
with Fujitsu drives. The Ciprico is the only non-Sun hardware and of
course is a bit suspect.
Has anyone had a similar problem, or have any ideas? I would like
to hear from anyone else running a Sun 4 under SunOS 4.0 with a
Ciprico and ALM2.
--
Ken Mandelberg | {decvax,sun!sunatl,gatech}!emory!km UUCP
Emory University | km@emory BITNET
Dept of Math and CS | km@emory.ARPA ARPA,CSNET
Atlanta, GA 30322 | Phone: (404) 727-7963harry@rainbow.atmos.washington.edu (Harry Edmon) (08/10/88)
I have the same problem running SunOS 3.5 on a Sun 3/160 using an ALM2 and a Ciprico 3220 controller with a CDC Saber drive. I have no answer as of yet as to why this is occuring. -- Harry Edmon ARPA: harry@rainbow.atmos.washington.edu (206) 543-0547 UUCP: uw-beaver!geops!elnino!harry Department of Atmospheric Sciences BITNET: HARRY@UWARITA University of Washington
ron@topaz.rutgers.edu (Ron Natalie) (08/10/88)
Rutgers.EDU had so much problem with their ALM board (even on a completely stock SUN configuration (Xylogics controllers)) that we just gave up. We've moved everything to terminal servers, including the UUCP connections. -Ron